The Upgrade-Insecure-Requests HTTP request header tells the server that the response should redirect to a secure (HTTPS) resource.

Learning resources on MDN

No MDN documentation found. You can search for the feature on MDN. If you believe that MDN has no documentation about this feature, you can open an issue on MDN's GitHub repository.

Browser support

• Chrome 44 Released on 2015-07-21
• Chrome Android 44 Released on 2015-07-29
• Edge 17 Released on 2018-04-30
• Firefox 48 Released on 2016-08-02
• Firefox for Android 48 Released on 2016-08-02
• Safari 10.1 Released on 2017-03-27
• Safari on iOS 10.3 Released on 2017-03-27

View web-platform-tests results for this feature - View the feature source file (dist) - Edit the feature - Report an issue about this feature